Commercial shipping in the Strait of Hormuz has slowed to a near standstill following a naval blockade reimposed by the United States and subsequent restrictions enforced by the Islamic Revolutionary Guard Corps (IRGC). Iranian authorities are directing waiting ships to stop, turn back, or restricting passage exclusively to vessels from allied nations such as China and Iraq.
Strait of Hormuz Declared Unsafe Amid Naval Blockade
The escalation follows a presidential decision and an announcement by the United States Central Command in mid-July 2026 to reimpose a naval blockade on Iranian ports and coastal areas. Washington enacted the measure in direct response to attacks on commercial ships inside the strategic waterway. Iranian Foreign Ministry spokesperson Esmail Baghaei stated that the strait is currently unsafe due to what he termed American assaults on Iranian oil tankers over a two-day period, alongside the ongoing maritime blockade throttling Iranian ports.
While on-the-ground monitoring in the region did not record a direct security incident within a recent 24-hour window, Iranian officials point to prior strikes on oil tankers anchored near Kharg Island and around the port of Jask. In retaliation, Tehran targeted American vessels operating within the maritime blockade zone in the Arabian Sea.
Iran Proposes Exclusion Zone and Transit Fees
To counter the blockade, secretary of Iran’s Supreme National Security Council Mohsen Rezaei revealed plans to establish a restricted exclusion zone. This proposed zone would stretch from the western side of the strait out to the maritime blockade line in the Arabian Sea, reaching from the northern Indian Ocean deep into Gulf waters. Rezaei warned that any vessels attempting entry without authorization or navigating through unapproved lanes will face strict penalties.
Did you know? Iranian officials have described sea mines as an effective strategic weapon for shutting down the strait. According to state security statements, unauthorized vessels entering the newly proposed exclusion zone risk direct military targeting, mandatory toll fees, or mine-laying operations.
Penalties for violating the exclusion zone range from mandatory transit fees and direct military targeting to the deployment of sea mines. Iranian officials have characterized these mines as an effective strategic weapon for sealing the vital trade corridor.
Oman Shipping Agreement Faces US Hurdles
Simultaneously, Tehran continues to promote a bilateral agreement struck with the Sultanate of Oman regarding shared navigation lanes in the strait. According to the terms circulated by Iranian officials, inbound traffic from the Sea of Oman into the Gulf would travel exclusively through the northern Iranian corridor. Outbound traffic would utilize two separate lanes split between Iranian and Omani waters.
Tehran maintains that the agreement is finalized and destined for registration with the International Maritime Organization. However, the pact requires preliminary approval from the United States given Washington’s close diplomatic and military ties with Muscat. US officials have expressed significant reservations regarding the plan. Washington objects to granting Iran any expanded monitoring or management role over the central international shipping lane, fearing Tehran could exploit the setup to smuggle weaponry through unmonitored maritime corridors.
Shipping Traffic Comparison: Normal Operations vs. Current Restrictions
| Metric | Normal Operations | Current Status (July 2026) |
|---|---|---|
| Daily Vessel Transit | High volume (Hundreds of commercial and oil tankers) | Restricted to 5–6 approved vessels daily |
| Route Access | Open international transit lanes | North corridor reserved for allied nations; central lanes monitored |
| Security Posture | Standard international maritime patrols | US naval blockade active; Iranian exclusion zone threatened |
Frequently Asked Questions
Why is the Strait of Hormuz currently closed?
The strait is experiencing a near-total traffic stoppage because the United States reimposed a naval blockade on Iranian ports, prompting the Islamic Revolutionary Guard Corps to restrict passage and require specific authorization for all entering ships.
How many ships are currently allowed to pass through the strait?
According to statements from Supreme National Security Council secretary Mohsen Rezaei, traffic has dropped to a minimal rate of only five or six approved vessels per day, primarily belonging to allied nations like China and Iraq.
What is the proposed Oman-Iran shipping agreement?
The agreement outlines a divided traffic system where inbound ships use the northern Iranian corridor and outbound ships utilize shared Iranian and Omani waters. The plan requires US approval before it can be registered with the International Maritime Organization.
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